Add support for camera preview to be in overlay surfaces. (c35feb10) · Commits · e / os / android_frameworks_base

camera/libcameraservice/CameraService.cpp

+38 −17

Original line number	Diff line number	Diff line
		@@ -158,6 +158,7 @@ CameraService::Client::Client(const sp<CameraService>& cameraService,
		mCameraClient = cameraClient;
		mClientPid = clientPid;
		mHardware = openCameraHardware();
		mUseOverlay = mHardware->useOverlay();

		// Callback is disabled by default
		mFrameCallbackFlag = FRAME_CALLBACK_FLAG_NOOP;
		@@ -233,7 +234,7 @@ CameraService::Client::~Client()
		{
		// tear down client
		LOGD("Client E destructor");
		if (mSurface != 0) {
		if (mSurface != 0 && !mUseOverlay) {
		#if HAVE_ANDROID_OS
		pthread_t thr;
		// We unregister the buffers in a different thread because binder does
		@@ -288,7 +289,7 @@ status_t CameraService::Client::setPreviewDisplay(const sp<ISurface>& surface)
		Mutex::Autolock surfaceLock(mSurfaceLock);
		// asBinder() is safe on NULL (returns NULL)
		if (surface->asBinder() != mSurface->asBinder()) {
		if (mSurface != 0) {
		if (mSurface != 0 && !mUseOverlay) {
		LOGD("clearing old preview surface %p", mSurface.get());
		mSurface->unregisterBuffers();
		}
		@@ -341,17 +342,39 @@ status_t CameraService::Client::startPreview()
		#if DEBUG_DUMP_PREVIEW_FRAME_TO_FILE
		debug_frame_cnt = 0;
		#endif

		status_t ret = mHardware->startPreview(previewCallback,
		status_t ret;
		if (mUseOverlay) {
		const char *format = params.getPreviewFormat();
		int fmt;
		LOGD("Use Overlays");
		if (!strcmp(format, "yuv422i"))
		fmt = OVERLAY_FORMAT_YCbCr_422_I;
		else if (!strcmp(format, "rgb565"))
		fmt = OVERLAY_FORMAT_RGB_565;
		else {
		LOGE("Invalid preview format for overlays");
		return -EINVAL;
		}
		sp<OverlayRef> ref = mSurface->createOverlay(w, h, fmt);
		ret = mHardware->setOverlay(new Overlay(ref));
		if (ret != NO_ERROR) {
		LOGE("mHardware->setOverlay() failed with status %d\n", ret);
		return ret;
		}
		ret = mHardware->startPreview(NULL, mCameraService.get());
		if (ret != NO_ERROR)
		LOGE("mHardware->startPreview() failed with status %d\n", ret);
		} else {
		LOGD("Don't use Overlays");
		ret = mHardware->startPreview(previewCallback,
		mCameraService.get());
		if (ret == NO_ERROR) {
		mSurface->unregisterBuffers();
		mSurface->registerBuffers(w,h,w,h,
		PIXEL_FORMAT_YCbCr_420_SP,
		mSurface->registerBuffers(w, h, w, h, PIXEL_FORMAT_YCbCr_420_SP,
		mHardware->getPreviewHeap());
		}
		else LOGE("mHardware->startPreview() failed with status %d\n",
		ret);
		else LOGE("mHardware->startPreview() failed with status %d\n", ret);
		}

		return ret;
		}
		@@ -372,7 +395,7 @@ void CameraService::Client::stopPreview()
		mHardware->stopPreview();
		LOGD("stopPreview(), hardware stopped OK");

		if (mSurface != 0) {
		if (mSurface != 0 && !mUseOverlay) {
		mSurface->unregisterBuffers();
		}
		mPreviewBuffer.clear();
		@@ -520,7 +543,7 @@ status_t CameraService::Client::takePicture()
		return INVALID_OPERATION;
		}

		if (mSurface != NULL)
		if (mSurface != NULL && !mUseOverlay)
		mSurface->unregisterBuffers();

		return mHardware->takePicture(shutterCallback,
		@@ -573,7 +596,7 @@ void CameraService::Client::yuvPictureCallback(const sp<IMemory>& mem,
		params.getPictureSize(&w, &h);

		// Mutex::Autolock clientLock(client->mLock);
		if (client->mSurface != 0) {
		if (client->mSurface != 0 && !client->mUseOverlay) {
		client->mSurface->unregisterBuffers();
		client->mSurface->registerBuffers(w,h,w,h,
		PIXEL_FORMAT_YCbCr_420_SP, heap);
		@@ -880,5 +903,3 @@ status_t CameraService::onTransact(
		#endif // DEBUG_HEAP_LEAKS

		}; // namespace android

camera/libcameraservice/CameraService.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -159,6 +159,7 @@ private:
		sp<ICameraClient> mCameraClient;
		sp<CameraHardwareInterface> mHardware;
		pid_t mClientPid;
		bool mUseOverlay;
		};

		// ----------------------------------------------------------------------------

include/ui/CameraHardwareInterface.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@
		#include <utils/IMemory.h>
		#include <utils/RefBase.h>
		#include <ui/CameraParameters.h>
		#include <ui/Overlay.h>

		namespace android {

		@@ -89,6 +90,11 @@ public:
		* call back parameter may be null.
		*/
		virtual status_t startPreview(preview_callback cb, void* user) = 0;
		/**
		* Only used if overlays are used for camera preview.
		*/
		virtual bool useOverlay() {return false;}
		virtual status_t setOverlay(const sp<Overlay> &overlay) {return BAD_VALUE;}

		/**
		* Stop a previously started preview.